Cosmological limits on neutrino masses are softened, by more than a factor 2, if Cold Dark Matter (CDM) and Dark Energy (DE) are coupled. In turn, a neutrino mass yielding Ων up to ∼ 0.20 allows coupling levels β ≃ 0.15 or more, already easing the coincidence problem. The coupling, in fact, displaces both P (k) and Cl spectra in a fashion opposite to neutrino mass. Estimates are obtained through a Fisher-matrix technique. © 2008 Elsevier B.V. All rights reserved.

LA VACCA, G., Bonometto, S., Colombo, L. (2009). Higher neutrino mass allowed if Cold Dark Matter and Dark Energy are coupled. NEW ASTRONOMY, 14(5), 435-442 [10.1016/j.newast.2008.12.004].

Higher neutrino mass allowed if Cold Dark Matter and Dark Energy are coupled

LA VACCA, GIUSEPPE
Primo
;
BONOMETTO, SILVIO;
2009

Abstract

Cosmological limits on neutrino masses are softened, by more than a factor 2, if Cold Dark Matter (CDM) and Dark Energy (DE) are coupled. In turn, a neutrino mass yielding Ων up to ∼ 0.20 allows coupling levels β ≃ 0.15 or more, already easing the coincidence problem. The coupling, in fact, displaces both P (k) and Cl spectra in a fashion opposite to neutrino mass. Estimates are obtained through a Fisher-matrix technique. © 2008 Elsevier B.V. All rights reserved.
Articolo in rivista - Articolo scientifico
Cosmology: theory; Neutrinos; Space and Planetary Science; Astronomy and Astrophysics; Instrumentation
English
435
442
8
LA VACCA, G., Bonometto, S., Colombo, L. (2009). Higher neutrino mass allowed if Cold Dark Matter and Dark Energy are coupled. NEW ASTRONOMY, 14(5), 435-442 [10.1016/j.newast.2008.12.004].
LA VACCA, G; Bonometto, S; Colombo, L
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/73410
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